Columnar. Like a column.
Commissure. The surface by which one carpel joins another, as in the Umbelliferæ.
Comose. Furnished with a coma or tuft of hairs.
Complicate. Folded upon itself.
Compound. Composed of 2 or more similar parts united into one whole. Compound leaf, one divided into separate leaflets.
Compressed. Flattened laterally.
Conceptacle. In some Cryptogams a case or receptacle containing the organs of fructification.
Conduplicate. Folded together lengthwise.
Confluent. Running into each other; blended into one.
Coniferous. Cone-bearing.